Machine for making barrel-hoops.



E. P. BEUGLBR.

y MACHINE FOR MAKING BARREL HOOPS.

APPLICATION FILED DBO. 21, 1911.

B. F. BEUGLBR.

MACHINE PoR MAKING BARREL HooPs.

APPLICATION FILED DEO. 21, 1911.

1,062,874. Patented may 2v, 1913.

13 SHEETS-SHEET 2.

Fig. 2. V

Witnesses. @dm-MRM 2W. Inventpr.

E. F. BEUGLER..

MACHINE FOR MAKING BARREL HooPs.

APPLIUATION FILED DEG. 21, 1911.

13 BHEETVSHEET 3.

dw'mi. Inventor.

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.ltlomay Patented May 27, 1913.

E. F. BEUGLER.

MAGHINBFOR MAKING BARREL Hoops.

Patented May 27, 1913.

APPLICATION EILED DEO. 21, 1911. 1 ,062,874.

13 SHEETS-SHEET 4.

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WItnesses.

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` E.P.BBUGLER. MACHINE FOR MAKING BARREL HOOPS.

APPLIOATION FILED Dnc. 21. 1911.

Patented May 27, 1913.

13 SHEETS-SHEET 6.

' ymwitnesses. dnmwem. inventan l Bv /bfvfl wrm lttorney.

E. F. BBUGLER.

MACHINE FOB. MAKING BARREL HOOPS. APPLIUAT'ION FILED DBO. 21, 1911.

13 SHEETS-SHEET 6.

Witnesses.

y Patented May 27,1913.

E. F. BBUGLER. MACHINE FOB MAKING BARREL HOOPS.

AEPLIOATION FILED D110. 21, 1911.

13 SHEETS-SHEET '7.

Fig. 7.

Patented May 27, 1913.

4 Patented May 27, 1913.

13 SHEETS-SHEET 8.

B.F.BBUGLBR-. MACHINE FOR MAKING BARREL HOOPS.

APPLIOATION FILED DBO. 21, 1911.

Il mi 'm u l69 dill Ell Imm Q |69 :13" um JW@ iv@ WGW- 0.! l il M @hmm/m 2 vm l @al l m www-. m 1m H Wm f |I 9u E. I'. BEUGLER.V MACHINE Isola` MAKING BARREL Hoors.

APPLICATIOI FILED/DEO. 21, 1911. n

l Patented M W Iig- M\A i A im A A M W,

.1311. BBUGLBR. MACHINE FORMAKING BARREL HOOPS. APPLICATION FILED DBO. 21, 19.11.

Patented may 27, 1913.

13 SHEETS-SHEET 10.

- Fig.15.

E. F. BBUGLER. 11110311111 BOB MAKING BARREL HooPs.

Arrmonlon rILnp 1120.21. 1911. Patetedmay 27, 1913.

18 SHBETHIEETIB.

E. P. BEUGLBR. MACHINE FOB MAKING BARREL HOOPS.

' APPLICATION FILED DEU. 21, 1911. I 1 ,062,874. Patented May 27, 1913.

1a SHEETS-snm! 1s.

Fig' 22' 105 5541111 UNITED srafrnsgggnnr OFFICE.I

EDWIN l'. BEUGLER, or' BUFFALO, NEW YORK, AssrGNOR. 'ro EDWARD B. HOLMES, OF BUFFALO, NEW YORK.

MACHINE Eon MAKING BARREL Hoors1 nocasaa..v i,

Specification of Letters Patent.

Patented May 27, 1913.

Application mea December 21, 1911. serial No. esmas.

' T 0 all whom it may concern.'

falo

Be it known that I, EDWIN F. BEUGLEB, a citizen of the United States, residing` at Bufin the county of Erie and State of New York, have` invented new and useful lmprovements in Machines for Making Barrel- Hoops, of which the following is a specicahoops and fastening the overlapping ends of the hoops by means of staples driven therethrough; a machine which 1s comparatively light in weight but unusually strongand durable; practically automatic in operation, yet simple in construction and devoid of all complicated mechanisms and intricate movements which not only render the Inachine bulky, but easily get out of order, necessitating frequent repairs'.

Among the special features of this new and improved barrel hoop making machine, the most prominent are ;-a device for forming, sizing and holding the barrel hoop; an automatic mechanism for starting and stopping the machine; a staple forming and driving mechanism; a Wire feeding mechanism with a selective attachment whereby any particular wire-feed may be Vcut out of operation; and an automatic staple clenching mechanism for clenching `the ends of the staples after they are driven through the overlapping barrel hoop ends.

There are also minor features embodied in this invention, all ofwhich, together with those above stated, -will be fully and clearly described and claimed, reference being had to the accompanying drawings, in which- Figure 1 is a left hand side `view of the im roved barrel hoop machine. Fig. 2 is a rig it hand side view ,of the machine. Fig. 3. is a front elevation of the machine. Fig. 4 is an enlarged vertical section through the machine on line a. a, Fig. 1, the' mechanism being shown in the position it assumes when sizing the hoop. Fig. 5 is a central section through the machine on line b b, Fig. 4.

Fig. 6 is a transverse horizontal section through the machine on line c, c, Fig. 4. Fig. 7 is an enlarged cent-ral vertical section on line d d, Fig. 3, through the upper portion of the machine, the mechanism being shown in position ready to drive the staples through the overlapping ends of the hoop. Fig. 8 is a horizontal section on line e e, Fig. 7, showing a plan view of a portion of 'the wire feeding mechanism; the staple forming and driving mechanism and the hoop sizing and holding form being omitted. Fig. 9 is a central transverse section on line f f, Fig. 8, showing'the means for cutting out the wire feeding mechanism; Fig. 10 is an enlarged detached fragmentary sectional view of oneof the bevel faced rollers and its sup orting block. Figs. 11 and 12 are enlarged) detached sectional viewsshowing the device for clenching the staples afterthey are driven through the hoop. Fig. 13 is an enlarged vertical transverse section on line g g, Fig. 7, through the wire feeding mechanism, parts thereof being shown in elevation to more clearly disclose the construction'. Fig. 14 is an enlarged detached fragmentary view of the device for operating the wire feeding mechanism. Fig. 15 is an enlarged detached front view of the hoop holding and sizing form and its support,

showing the form in closed position infull lines, to receive the hoop, and in open or expanded position in dotted lines to form and size the hoop. Fig. 16 is an enlarged fragmentary side elevation of a portion of the machine frame, showing. the toggle mechanism which provides for automatically starting and stopping the machine. Fig. 17 is a horizontal section on line h h, Fig. y,16, showing the 'sliding bar which carries the toggle breaking latch. Fig. 18 is an enlarged detached side elevation of one of the staple forming and driving devices, the covers thereof being removed and a portion shown in section to more clearly illustrate the construction of the mechanism which is depicted in its normal position. -Figz 19 is a central vertical section ony line z' i, Fig. 18. Fig. 20 is a bottom view of one of the staple forming and driving devices. Fig. 21 is a section on line j y', Fig. 18. Figs. 22, 23 and Q4 are fragmentary views of the lower portion of the device shown in Fig. 18, the mechanism being shown in the successive positions it assumes `when cutting, forming and driving the staple.

In the following description of the machine, each mechanism will, as far as possible, be described in detail in the order in y member 4 which connects the front and rear members at about their middle and serves as a strengthening piece, and a horizontal bottom member 5 which joins the lower ends of the front and rear members. The vertical members 1 and 2 are provided with supporting feet 6 at their lower extremities through which bolts may be passed to fasten the machine to the Hoor. The frame as a whole is also provided with various extensions, brackets, bosses and openings for the reception and support of portions of the operating mechanism, butthe description of these various parts will be reserved for and included in that of the particular mechanism of which they form a part. Two shafts are carried bv f the 'machine'frame One of these, the main shaft 7, is journaled in horizontalbearing's 8, A.formed in the front' and rear vertical frame members 1 and 2,

.between the intermediate andbottom frame members 4 and 5, and the other of'which constitutes a stationary' counter-shaft 9" which is rigidly supported in a boss 10 formed in therear frame member 2 above the horizontal main bearings 8. This counter shaft 9 is securely fastened in place by a. set screw 11 and extends rearwardly in a horizontal direction beyond the frame of the machine. It carries a driving pulley 12 which has both a rotative and a sliding movement thereon, and a pinion 13 free to rotate on the shaft but locked a ainst 1ongitudinal movement thereon. yT is pinion 13 supports a clutch deviceadapted to engage the driving pulley 12, in the manner hereinafter described. It also meshes with a large spur gearf wheel 14 which is rigidly fastened upon the projecting'rear end yof the main shaft 7 and provides a means for rotating said shaft.

The hoop' forming,

mecham'sm.-The mechanism for forming,

sizing and holding the barrel hoop is located chiefly infront of the machine and is clearly illustrated inFigs. 1, 2, 3, 4,v 5, 7 and 15 of the drawings to which attention is directed inthe following description. The

hoop form consists of two segmental members 15 and 16 which are hinged together at one side as shown at 17. They are practically semi-circular Vin shape and when exszz'ng and' 'i holding` n ried by the upper segmenta panded assumesubstantially a circular form of the size of the desired hoop. This segmental form is carried at the upper end of a swing-frame 18 which is pivotally supported at its lower end by ahorizontal pin 19 mounted in the outer extremities of two outwardly projecting lugs 20 formed integral with the front frame member 1 and located nearthe bot-tom thereof. As will be noted by referrin to Figs. 1, 2 and 5, the lower extremity o? the swing-frame 18 curves outwardly as shown at 21, and this curved portion carries the bearings 22 through which the supporting pin 19 passes, so that the pivoting point of the swing frame is at some distance from the vertical frame member 1. The purpose of this construction is to afford a certain amount of leverage so that a downward pull upon the hoop form will swing the frame 18 up against the front of the machine frame. The upper vsegmental hoop form member 15 is provided with a plurality of deep pockets 23 in the upper central part of itsl peripheral surface, which afford space for the reception and operation of the staple clenchers. In the form of the invention illustrated in the accompanying drawings, there are three such pockets, the number of pockets corresponding with the number of staples driven, andthe drawings showing a three sta le machine. l

rranged around the periphery of the segmental member 15'is a plurality of radial openings in each of which a small roller 24 is seated with its faceprojecting an infinitesimal distance". beyond the periphery of the segmental member, These rollers are mounted on transverse 'pivot'v pins 25' as shown in Figs. 3 and l'and serve to eliminate the greater portion `of the friction incident to the stretching ofthe hoop when expanding the-form. This segmental member 15 is rigidly secured by bolts 26 to the upper extremity of the swing frame 18 in the manner shown in Figs. 7 and 15. The

lower segmental hoop form member 16 is connected to the upper member 15 by the i hinge 17 and is provided. with a wide, peripheral ange 27 which serves as a guard orl stop to prevent the hoo-pfrom slipping off the form. It also has a transverse bar or :spreader 28 formed integral therewith which is providedwith a vertical slot 29 through which a depending guide bar 30 carmember 15 passes. This guide bar serves to member 16 in a direct line with-the u per member -15 when expanding to size the oopV and prevents any side motionior play.

The barrel hoop is held in'place uponthel hoop form by means of ahooked bar which is controlled by a food lever. 'Thisbar 31 has its upper extremity bent forward to form a hook 32 and its lower extremity connected verselyextending foot lever 34. The foot y lever is pivot-ed by a in 35 to the rear frame member 2 and exten s forwardly and passes through a vertical slotl 36 in the front frame member 1, see Figs. 1, 2, 3,14 and 5.A It is provided at its outer extremity with a foot pad 37 and is normally retained in its elevated position by a spring 38.

The hooked bar 31 has a longitudinal up andv down movement with respect to the swing frame 18 andis guided in its movement by vertical slots'39 and `40 which are formed in' upper and lower lugs 41 and 42 on the swing framevlS. As it is desirable that the. hooked bar 31 be retained out of the way when the hoop form is closed in order to permit the easy removal of the' hoop, a device is provided whereby thev hooked bar 31 is retarded in its move-ment so that it has not the same range of forward movement as the swingl frame.l By referring to Figs. 1, 2 and 7, it will be noted that the upper lug 41 extends rearwardly from the swing frame 18 so that the slot 39 is comparatively deep which permits a front and rear movement of the bar V31 therein.

The upper rear portion of .the slot 39 is spanned by a bridge piece 43 and a roller 44 is pivoted by a pin in the lower rear portion of the slot as shown in dotted lines in Fig. 7. The hooked bar 3l carries a collar 45 which is located just below the point where the bar passes through the slot 39 and is provided with a curved rearwardly projecting linger 46. This finger is adapted to ride the roller 44 when the hooked bar moves upwardly and so draw the bar rearwardly in the slot. The lower portion of the hooked bar is retained in the slot 40 by a Hat -spring bar 47 which is bolted t0 a laterally projecting lug 48 on the swing frame 18 and extends horizontally across in the rear of the hooked bar.

The hoop form is ,expanded to size the hoop by power means consisting of a lever, a connecting rod, and a cam' mounted on the main shaft and engaging the lever. The lever 49 is of angular form and is arranged transversely within the machine directly below the main shaft. It has its rear end projecting into a slot in the rear frame member 2 and fulcrurned upon a transversepin 50. The front end of the lever 49 is forked and straddles a'flanged block 51 through which the lower extremity of a vertical connecting rod 52 is passed and adjustably fastened in place by lock nuts 53. The upper end of this. connecting rod is bent at right angles and passed through an. opening in a boss 54l formed in the transverse bar or spreader' 28 of the lower' segmental member 16 of the hoop form. The transverse lever 49 has two upwardly extending lugs between which a roller 55 is arranged and pivotally supported upon afpin seated: inl

the lugs'. Thisroller engagesA the faceof acam 56 which is mounted .upon *the main shaft 7 directly in the rear of the 'front-` bearing 8 and is adapted to depress the lever. y 49 and thus expand the hoopform by drawn v ,l

4ing downward upon the vconnecting rod52. The lever 49 is maintained in contact with the cam 56 by means of a spring 57, one end of which is fastened to an eyejbolt 58 passed- 'through the' front frame member and the other end of which is secured to the lower end of a. depending arm 59 located near the rear of the lever. n A device is provided `for locking the swing frame and 'hoop form in position p after they have been swung back in place against the machine frame. This device is shown in Fig. 7 and consistsof a horizontal bar 60, t-he rear end ofnwfich is supported by an eye bolt 61 secured to the rear frame member 2 and the front end of which is bent to form a hook 62 which. is adapted to catch over the bridge piece 43 on the lng 41 and so maintain the'swing frame in posi- A tion against the front of the machine. The

rear end of the bar 60 is bent to form an eye, and a bolt 63 is passed through both this eye and the eye bolt 61, and is encircled by a spring 64 which serves to maintain the bar in locking position with a spring tension.

The swing frame 18 is swung away from the machine after the lock bar 60 is released by means of a pair of springs 65 which encircles the inner ends'of a pair of rods 66 passed through the front frame member 1 and through two depending lugs 67l extending from the bearings 22 of the swing A frame. The springs encircle the rods in the rear of the frame member I and exert an inward pull upon the lugs 67 which tends to swing the frame away from the machine, see Figs. 1, 2, 3 and 5.

The automated starting and stopping mechanism.-'I`he mechanism for automatically starting. and stopping the machine is illustrated in Figs. 1, 2, 3, 4, 5, 6, 16 and 17, to which referentie-will be had in the following description. Thielutch which is vcarried by the pinion 13 on theakcounter shaft 9, consists-'of a disk 68 to th'rear Iface of which are bolted clutch blocks 69. The periphery of these clutch blocks is shaped to the form of-a truncated cone, whichis adapted to frictionally engage with a corresponding conical or tapering surface formed on the pulley 12, see Fig. 6. The clutch and its support-ing pinion 13 are prevented from moving longitudinally on the shaft 9 by a collar 70 fastened to the shaft by a set screw, but are free to rotate thereon. The driving pulley, however, is not only free to rotate on the shaft, but also has a sliding movement thereon toward and from the clutch. It is moved by means 'of A bers 1 and 2 and is moved to bring the ings 73 and an adjustable collar 76 fastenedv ing arm 77, and a setscrew88jpassedhori` other sliding bar 72. It ispreferably made square m cross section so .as to prevent. rof" member. The latchis pivoted tothis bary an arm 71 which is supported upon the rear end of a transverse horizontal sliding bar 72 and has its end encircling the hub ofthe pulley. The transverse horizontal bar 72 is slidably supported in bearings 73 formed at the outer extremitiesof lateral extensions 74 on the front and rear frame mempulley 12 into frictional `contact with the clutch blocks 69 by means of a comparatively heavy compression spring v75 which encircles the bar between one of the bea-rthereon by a set screw. The sliding bar 72 is normally held in its rearward position with'the spring under compression and the pulley disengaged from its clutch, by means of a toggle, lever and wedge device which consists of a horizontal, inwardly extending arm 77 rigidly fastened to the slidingbar by set screws; a perpendicularly arramgeld bell crank 78 pivotally supported upon a pin 79 at t-he inner end of the horizontal arm 77; a link 80 connecting the horizontal member of the bell crank to the upper eX- tremity of a lever 81 which is fulcrumed 011 a .horizontal pin 82 extending from an inwardly projecting lug 83 on the front frame member 1, and carries a roller84 at its lower extremity; and a wedge 85 is arranged upon the outer lateral surface of the cam 56 and adaptedv to operatively engage the roller 84, see Fig. 16. A spring 86 has its upper and lower ends fastened to lugs extending respectively from the horizontal member of the bell crank 78 and from the lever 81 at a point below the fulcrum 82. This spring serves not onlyv to normally maintain the roller 811 in operative Contact'v with the wedge 85 but also to spread.the toggle composed ofthe bell crankl 78v and link-80 so as to bring itspivvots in a straight line. To take up wear` andv allow for ad-l justment, a stop is provided which consist-s of a vertical lug 87 on the inwardly?extend;l

zontally through a laterallug 89.z`for integral with the ,verticalY membexiao`v e' bell crank 78. `This-set'serevtris'adap'ted to Contact withfthe vertical'fglug 87 and fso limit` the movement' -of the bellcrank inone'x di,- rection. Y y' The toggle is broken to permit the for',1 ward movement ofthe sliding bar 72 so as to bring the pulley 12 into frictiona'l contact with the clutch, bya latch which is carried b v a transverse horizontal sliding bar This bar 90 is slidably supported inv open` ings in the front and rear frame members 1 and 2 and is located diagonally above the tation in its bearings andhas its front end projecting a short distance beyond the frame other.

90 by la bolt 91 and has a horizontal fiat portion 92 which rests upon the bar, a depending lug 93 at the end of this flat portion opposite the pivoting bolt 91 which extends downwardly outside the bar and is adapted to engage the Vertical member of the bell crank 78 when'the bar 90 is moved in one direction, an inwardly extending portion 94 located opposite the depending lug 93 and having an oblique edge; and a lug 95 extending inwardly from the flat portion 92 between the portion 94 and pivoting bolt 91 and which is provided with a pocket in which a coiled spring 96 adapted to bear against the square sliding bar 90 is seated. Thebar 90 is normally maintained in its forward position by means of a coiled compression spring 97 which encircles the bar between the rear frame member 2 and a collar 98 adjustably secured to the bar by a set screw. Another collar 99 adjustably secured byaset screw tothe bar 90 between thel latchgand the front frame member 1, serves as a stop'to limit the forward movement of the bar, see Fig, 16. The sliding bar 72 also carries a brake for the purpose of instantly stopping the machine at the end of each revolution, so that the momentum of the moving parts will not carry them beyond the proper stopping position. This brake consists of an arm 100 secured at its outer end to the sliding bar 72 by set screws and having-its inner end formed in the shape of a ring'101 which encircles the hub of theclutch disk 68. As will be noted in Fig.,6, the opening in the ring 101 is considerably larger than the hub of the disk so that .the two parts do not contact with each @Theri'ng 101 carries clutch blocks 102 similar to theclutch blocks (i9 and fastened vin place in like manner.

These clutch block'sh102 are adapted to frictionally engage withv the ltapered wall of a conical depression'lOSformed in the side of the clutch v disk 68.

Itwill, readily be seen that when the sh'ding,bar.72.is.v shifted to disengage the .pi 1 1ley..fl12ffronr theclutch blocks 69, the cliitchftblocks,102`will be brought into en- 'gilgement'jyviththe clutch disk G8 and in- '1 Stantlycease its rotation. The arms 71 and l00are united byl atie bar 104 to more yfirmly secure them in place on the bar 72 and sol prevent the movement of one independent of the other.

' The staple 'forming and drin/'ng mechanism/. The staple forming and driving `nmiechanism 1s mounted upon the top of the `machine and v1s arranged to project over the fh'oopf form 1n front of the machine.

A Tn the following description of this mechanism.

reference vwillbe had to Figs. 1. 2. 8. 7. 18.

19, 20, 21, 22, 23 and 24, in which it will he noted-that three staple formel-s and drivers one will be described in detail, the refer-v constructedin accordancev with this invention having .a greater or less 'number of" staple fornieis and drivers-,the number being determined by the dimensions of the hoop` or the particular desires of the user. As `each is a counterpart of the other but ence numerals, however, indicating like parts in ez-ich.

As above noted, each staple forming andV driving device is located `on `the top ol" the machine, and consists of a housing 105 arranged vertically above the hoop forni and having a rearwardly extending portion 106 through which a stud 107 passes to secure the housing to the top member 3 of themachine frame, and a vertical longitudinal slot Orears 118 projecting from the outer lati-- 108 in which certain moving parts are con,- tained. y A-two part cover 109 is secured to the housing by bolts 11050 that the slot 108 is open at the top and bottom, and the moving parts contained vtherein are held against displacement and accurately guided in their.

movement. These `fparts consist of a vertically movable cutting and forming die 111- having a comparatively long slot or opening4 112 extending longitudinally upward from its bottom'edge; afvertically-'movable opg erating bar 113l which, whenthe parts are in their normal position, extends'into thehous. ing toa point about midway from the top and has a depending tail piece 114 fastened. thereto by rivets 115 which is voperatively,

arranged in the slot 112 and serves las a eral surface of thehousing 105 and has its upper and lower'extreinities 119 .and 120, bent at an angle and extending through ('-peniigs 121 and 122 into the interiorK of the housing, see Fig. 19.

pivoted anvil is adapted to enter at certain stages of the operation. n w

A guide block 124 is located in the ,lower portion of the slot 108 in the housing, being fastened in place by rivets, as show-n in Fi 18. It. serves as a guide for the lower end ot' the cutting and forming die 111 and also contains a slot or 0pening125 through which the lower-'bent end 120 of the pivoted anvil'passes an'd is guidedsee Figs. 18 and 19. The bottom edges Aof the cutting and forming die .111 and the driver oihamn-ier 114 are grooved as shown at 120 to receive the wire 127 fronrwhich Athe staple is to` be formed, and thecdges 'of the'longitudinal slot 112 are also grooved as shown at 128, to receive sho-rt. lateral projections 1 29 on the sides of the driver or hammer which slide forn'iing diejlll move y vportion of theirvoperation, and while thus .cc-acting. are locked together` by a dog 137 The operating bai 118.1is also provided with a longitdinal slot; v 123 intofwhich the upper bent end 119 of ther in the grooves 128 and guide the hammer in its travel. l horizontallyextending cutting die 180 seated in a lateral depression in the rear vvextension 106 of the housing and is fastened in place by a block 131 which is secured to theextension 106 vby a bolt. The front end of the cutting die 130 is beveled as shown at 132 in Figs 18, 19 and 20, and enters the slot 108 ofthe housing through an opening 133 in the krea-r wall thereof. The rear edge of the cutting and forming die 111 is similarly c hainfered or beveled as shown at 134 in Figs. 18 and 20, and these two beveled edges operate together to cut the wire 127 obliquely so as to leave a pointed end. The top edge of the cutter 130 is also grooved to receive and guide the wire 127, as shown in Fig. `19.

A transverse'pin y155 is slidably supported in anopening in the side of the housing below the pivoting pin 117 of ythe anvil 1115 .and has its outer end in contact with the anvil and its inner end rounded and adapted to be operatively' engaged by the beveled or wedge shaped 4lower end 136 of the operating bar 113 as it moves downward. It will readily be seen that when this occurs the anvil 116 will be move on its pivot 117 and its lower end 120 swung out of the path of the dscendinghanimer 114 to permit the :passageofthe staplev and its driver.

`The operating bai` 113 and the cutting and 1n unison through a which is p'vota'lly suspended from a horizontal pin 138 projecting from the operating bar and has its lower end notched and v adaptedA to engage the upper rear corner of the cutting and forming die 111. The dog is held against displacement from the pi'n 138 by a recessed collar 139 which is fastened'to the pin by a set screw, and contains a coiledspring 140. This spring has yits `ends fastened, respectively, to thc collar 139 and the dog 137 and serves to maintain it in contact with the cutting and forming die 111.

The lower extremity of the dog 187 is bent outwardly at right angles as shown at 111. and this bent end is adapted to co-act with abeveled portion 142 of the cover 109 of the housing, to release the dog from the cutting andl forming die 111 and permit the operating bar 11,3 to continue itsl operation lwhilethe die 1.11 remains stationary, sec Fig.. 7

A The operating bar 118 is moved up' and down in a vertical direction byincans of a rock arm 143 which has its rcar end pivotally mounted upon a transverse horizontal pin 141 supported in thc upper end ot' an ulpright bracket 145 fastened vto tliercar of tie top frame member 8 by bolts 140 and its front end forked as shown at 147 to receive and hold a flanged block 148 through which a screw threaded bar 149 is screwed and adjustably fastened by lock nuts 150, see Fig. 7. This bar 149 carries a forked block 151 at its lower end which straddles the upper end of the operating bar 113 and is pivoted thereto by a pin 152. It will be noted that there are as many forksor bifurcations 147 at the front end of the rock arm 143 as there are staple formers and drivers'and all the flanged blocks 148 are held againstv displacement by a transverse pin`153 lsupported by the end forks and passing in front ofthe blocks.

A heavy coiled spring 154 has its ends prolonged and bent, respectively, so as to hook around the projecting end of the pivot pin 152 and seat in a small opening in the top edge of the cutting and forming die 111.

This spring serves to return the cutting and' forming die 111, to its normal position with respect to the operating bar' 113 after the operation of driving a staple is completed. 1

`The rock arm 143 is operated by means of a cam 105 mounted on the main shaftl 7 and a connecting rod 156 which has its upper end pivoted to the rock arm bv' av pivot pin 157 and its lower end bolted to a yoke which embraces the cam. The yoke is constructed as shown in Figs. 1, 2, 4, 5 and 6 and has two vertical side members 158 which straddle the hub of the cam and 0palso be made of like material to resist Wear.

The wire feeding meci.a-m'sm.-The wire' from which the staples are made is fed to the stapleforming and driving mechanism at the very beginning of the machines operation by mechanism illustrated in Figs. 1, 2, 7, 13 and 14. An upright bracket 162 is arranged upon the top 3 of the machine directly in the rear of the battery of staple formers and drivers, and extends entirely across said top being fastened in place by bolts 163, see Fig. 13. A transverse horizontal feed shaft 164 is journaled in bearings in the bracket 162 and carries the main feed rolls 165. These rolls are of a comparatively large diameter and are eachprovided with a semi-circular annular groove 166 of about the same diameter as the wire.

The rolls are arranged upon the feed shaft so that the annular grooves are in a direct line with the grooves in the horizontal cutting dies 130 and are provided with hubs through which set screwsf167 pass lto fasten x .ing 170 and a friction roller 171 is pivotally supported in this slot upon a transverse pin 172. The front end of each lever is formed to constitute a socket in which a coiled spring173 is arranged so as to bear against the surface of the machine top 3 and exert an upward pressure upon the lever. This tends to force the friction 1'oller171 against the main feed rolls 165 and thus hold the wire in the groove 166. In order to provide a smoothly operatingmechanism, the friction rollers may be provided with roller bearings 174, as shown in Fig. 13.`

A flanged 'ratchet wheel 175 is securely fastened by a set screw to one end of the feed shaft outside the bracket 162 and a dog or pawl 176 carried at the upper end of a substantially upright lever 177 is adapted to operatively engage the ratchet wheelV 175. The lever 177 is fulcrumed on a pin 178 carried in an inwardly projecting lug on the front frame member 1 and has a roller'179v att-ached to its lower extremity which` is adapted to operatively engage a wedge shaped projection 180 on the front face of the cam 56, see Fig. 2. A spring is provided `to return the lever to its normal position after it has operated the feed mechanism and it'is also provided with an adjustable stop 182 by means of which its range of movement may be varied.

The wire is arranged in coils upo-n reels 183 which are rotatably supported upon an upright bar 184 carried by an adjustablel bracket 185 secured to the rear of the upright bracket 145. "It is led forward from the reels through openings in the bracket 145 to the feed rolls 165 and thence into the staple forming and Ydriving mechanism through the grooves inthe horizontal cutting dies 130.

A trough 186 is arranged upon the machine top immediately in front of the upright bracket 145 and is filled with oil soaked waste through which the wire passes on its Way to the staple forming and driving mechanism. The purpose of this is to lubricate the wire so that it passes more easily through wet hoops and also to oil the dies and cutters which operate upon it.

In practice it sometimes happens that a staple is broken -or bent while'being driven through the hoop, and the operator desires To providel to drive another in its place. for this, a device is provided whereby the wire feed, to either one or two of the staple formers and drivers is cut out of operation so that the hoop may be replaced in themachine and one. or two staples driven where desired. This device consists of a rocking cam bar` 187 arrangedhorizontallyacross` thetop of the machine in therear of the feed mechanism, and having depending lugs at its ends through which vcone pointed set screws 188 pass and enter conical depressionsy in the sides of the machine top 3. The surface of the cam bar 187 is provided with cam enlargements 189 adapted to co-act with adjustable set screws 190 carried in the rear ends of the parallel levers 169 which curve up Vand over the cam bar so that the set screws are centrally above it.-

The cani bar is provided with an operating handle. 191 by means of which it may be rocked on the cone pointed set screws 188 and a counterweight 192 to normally maintain the cam bar in a central inoperative position. It will readily be seen by referring to Fig. 9 that when the cam bar is rocked to bring one of the camenlargernents beneath the end of the set screw 190, the rear end of the lever will be elevated and itsv front end depressed so as to withdraw the friction roller 171 from contact with the feed roll 165 and thus remove the pressure from the wire. When the feed rolls are again rotated, this particular wire will not be fed, so that no staple will be formed and driven into the hoop. ln this manner the machine can be instantly converted into a one staple or two staple'machine if desired.

The stapZecZen-o/m'ng m-echansm.-A fter the staple has been driven into the hoop, its projecting ends are bent over vor clenched. The mechanism for doing this is illustrated in Figs. 1, 2, 3, 5, 6, 7, 8,11 and 12, in which a series of horizontal longitudinally extending parallel bars 193 are shown arranged immediately beneath the top of the machine. The rear ends of these bars are slidably supported in a bracket 194 which is fastened by a holt 195 to the inside of the rear frame member 2 and their frontends pass through a comparatively large opening in the front. frame member 1 and project beneath the staple formers and drivers. These bars are supported near their front. ends by flanged rollers 196 carried by adjustable brackets 197 which are secured bv bolts 198 to the inner side of the front frame member A1 in the manner shown inv Fig. 7. A staple clcnching device is arranged upon theprojecting front end of each bar 193 and consists of a plate 199 which is riveted to the bar and has curved ends in which transversely arranged cylindrical metal blocks 200 are seated.' metal blocks are fasi- 201, seeV Fig. 8.

In order to provide for the'circular form of the hoop and -to sov arrange 'the clenching devices that they will operate squarely against the inside of the hoop, it is necessary to tiltthe two side bars 193 atan anule as shown in Fig.v 3. To allow for this, t e rollers 196 upon which these bars are supported have beveled faces as shown in Fig. 10 and the rear ends of the bars are supported in adjustable blocks 202 which are secured by bolts 203 to the bracket 194, see Fig. 13.

t will be noted by referring to Figs. 3

and 7, that the front ends of the bars 193 and the elenehing devices carried thereby enter the pockets 23 in the segmental hoop form when it is swung up into operative po-.

sition. These pockets provide the necessary roo-m for the operation of the clenching de vices.

The bars 193 are shifted back and forthv to move the clenching devices to and fro. be-

neath the hoop to clench the staples, by 'i means of la perpendicular rocking lever` 204 which is operated by a cam 205 mounted' upon the main shaft 7 in the'reair of the cam 155. The' rocking lever 204 is fulcrumed on a pin 206 carried in an inwardly projecting v l ars 193, see Fig. 7. The lower extremity .i of the lever 204 carries a roller 210 adapted to operatively engage in a cam slot 211 in the cam 205. This cam slot is formed so as to give a quick rocking movement to the vlever 204 during a part onlyof the revolution of the main shaft. j

In order to resist the back thrust on the main shaft 7 a. friction block 212 of wood or other material is adjustably secured by bolts 213 to the rear frame member 2 and arranged so as to contact with the rear face of the cam 205. Thisgblock also serves as an additional brake to assist in stopping the rotation of the main shaft.

ln the description of the automatic start-- ingi and stopping mechanism it is stated that the toggle was broken by a latch carried by a sliding bar 90 coming in contact with a bell crank 78. A device is provided to swing the latch out of the way during the return movement of the sliding bar so that the return o-f the bar will not be interfered with. This device consists of a vertically disposed bleek 214 which is adjustably 'clamped by bolts 215 to the connecting rod 156 and has an oblique edge 216 which is adapted to co act with the oblique edge onthe portion 94 

